I am publishing to html5 (without any quiz) and uploading to Moodle as a web file. This has worked well so far, except suddenly there is a slide with a normal level of animation that just wont work. I have used both Safari on iPad and also Google Chrome to view, with the same problem.
It just slows and stalls always at the same point, for no apparent reason. In the Storyline previewer it all works ok.